Home / 19,912.86-29,871.90-6,761.70

Finding the Fourth Proportional to 19,912.86, 29,871.90 and 6,761.70

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Solution

The fourth proportional to 19,912.86, 29,871.90 and 6,761.70 is: 10,143.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.86 : 29,871.90 = 6,761.70 : x
  2. Step 2: Convert to fraction form
    19,912.86/29,871.90 = 6,761.70/x
  3. Step 3: Cross multiply
    19,912.86x = 29,871.90 × 6,761.70
  4. Step 4: Simplify right side
    19,912.86x = 201,984,826.23
  5. Step 5: Solve for x
    x = 201,984,826.23/19,912.86
  6. Step 6: Final answer
    x = 10,143.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.